With the vigorous development of the automobile industry, due to the needs of environmental protection and energy saving, automobile lightweight has become the trend of automobile development in the world.
The market prospect of lightweight aluminum is promising. In the process of automobile lightweight, aluminum alloy materials will give full play to their natural advantages, which are mainly used to transform and replace body materials. Automobile lightweight can be divided into four categories: body lightweight, engine lightweight, chassis lightweight and heat exchange system lightweight, whose purpose is to reduce vehicle weight by using lighter materials on the premise of ensuring performance, so as to achieve the function of energy saving and environmental protection.
Aluminum has good mechanical properties, its density is only 1 / 3 of steel, has good thermal conductivity, and its machinability is 4.5 times higher than that of iron, so aluminum has become the most ideal material for automobile lightweight. Aluminum alloy can reduce the weight of the whole vehicle by 10%. For every 100 kg of weight loss, fuel consumption can be reduced by 0.4 liters, carbon dioxide emissions can be reduced by 1 kg, and fuel efficiency can be increased by 6%. 8%.
Aluminum has good corrosion resistance, and the naturally formed oxide film on its surface has good corrosion resistance, so the "all-aluminum body" will be better than the traditional steel body in terms of durability.
Aluminum alloy car is to reduce the weight of the car without reducing the capacity of the car, reduce the center of gravity of the car body, and make the car more stable and comfortable.
Due to the good energy absorption of aluminum, it has obvious advantages in collision safety. The deformation zone of the front of the car will produce wrinkles during the collision, which can absorb a lot of impact force, thus protecting the drivers and passengers behind.
In the cycle of aluminum-aluminum products-use-recovery of recycled aluminum ingots-reprocessed into aluminum, the loss of aluminum is only about 5%, and its regeneration performance is higher than that of any common metal.
